Robocode 1.11.0

Version 1.11.0 (06-Jun-2026)

Changes

• Installer overhaul: Refactored the monolithic AutoExtract installer (844 lines) into 5 focused classes
  (Installer, InstallerDialog, Extractor, ShortcutManager, OsUtil).
• Reduced confirmation dialogs from 5 user prompts down to 1 — a single "Install to" dialog with Proceed/Cancel.
• Removed license agreement dialog, start-menu shortcut prompt, and Windows file associations prompt.
• Removed Windows .battle/.br file association registration (rarely used, required admin privileges).
• Removed legacy code: Win 9x/ME command.com path, obsolete .robotcache migration, fragile self-cleanup hacks.
• Windows shortcuts are now always created without prompting.
• Improved code quality: try-with-resources, StringBuilder, proper error handling, fixed spinner animation bug.

Bugfix

• #89: Prevent a single fire command from spawning duplicate bullets with the same ID
  • A single setFire() call could spawn multiple bullets sharing the same bullet ID, which could cause issues with
    bullet tracking and battle accuracy.
  • Thanks go to Pavel Savara for fixing this ❤️. Sharp-eyed fix!

Robocode 1.10.3

Version 1.10.3 (18-May-2026)

Bugfix

• #85: Fix NPE causing truncated battles when a robot thread stop is attempted
  • If the thread stop fails, a NullPointerException was thrown which aborted the battle early, resulting in battles
    being reported with results but the wrong number of rounds.
    The fix takes a reference to the thread beforehand so the NPE is avoided when forceStop() sets it to null.
  • Thanks go to Julian Kent for fixing this ❤️. Nice catch!

Changes

• Help menu improvements:
  • Added a new menu item "The Book of Robocode" pointing to https://book.robocode.dev/
  • Updated "Online Help" to point to Getting Started guide from the Book of
    Robocode (https://book.robocode.dev/getting-started/)
  • Updated "Java API documentation" link from Java 16 to Java
    25 (https://docs.oracle.com/en/java/javase/25/docs/api/index.html)

Version 1.10.2 (24-Dec-2025)

Bugfix

• Fixing security issues (CWE-23)

Robocode 1.10.1

Version 1.10.1 (09-Dec-2025)

Bugfix

• #71: Replaced Thread.stop() call with Thread.interrupt() in the RobotThreadManager
  • The Thread.stop() call has been removed as of Java 21, so the old call to stop() would cause the rest of the
    battle to be aborted; e.g., if you were running 100 rounds, but after the second a robot's thread needs to be
    terminated, then that would abort the rest of the rounds.
    By swapping in interrupt, the thread should still terminate, but gracefully.
  • Thanks go to Jeremiah Blanchard for fixing this ❤️. Nice catch!

Changes

• Improved documentation and comments with all sample bots.
• Updated libraries (dependencies) to the latest versions (including Eclipse Compiler for Java and Codesize).

Robocode 1.10.0

Version 1.10.0 (04-Jun-2025)

Robocode's code around RobocodeSecurityManager has been refactored to ensure compatibility with Java 24 and newer
versions, even after the retirement of the Security Manager in Java 24.
Read more here.
Additionally, Robocode remains fully functional on older Java versions, from Java 8 onward.

Changes

• Java 24 support: Implemented new security mechanisms that work with Java 24+ while maintaining compatibility with
  Java 8+.
• Versioning update: Adopted Semantic Versioning starting with version 1.10.0.

Robocode 1.9.5.6

Version 1.9.5.6 (30-May-2025)

Bugfix

Lim Sim Yee found and fixed the following vulnerabilities. Thank you for the PRs ❤️

Vulnerabilities fixes:

• #67: The CacheCleaner contained a Directory Traversal Vulnerability when deleting files (recursively).
• #68: Fix for Insecure Temporary File Creation.
• #70: Fix Integer Overflow Vulnerability in Buffer Write Method.

Naval Robocode 0.9.2

Naval Robocode Version 0.9.2 (02-Mar-2015)

Changes

• Merged all changes with Naval Robocode with Robocode 1.9.2.4 (newest version).
• Flemming clean-up and Naval Robocode specification
• Now able to use naval-robocode.bat to start Naval Robocode
• Fixed a few UnitTests that fell short due to a few missing classes
• The in-game editor can now create a sample ship for you.

Bug fixes

• Mines now have a blast Radius. (See NavalRules)
  • Angles have been better documented
  • Custom run config robocode.NavalRobocode

Naval Robocode Version 0.9.1 (27-Jan-2015)

First release

• Ships instead of tanks
• Water background
• Still uses robocode.Robocode to launch
• Using the eclipse editor would be for the best
• Ships can place mines
• The version used within the company